What is a key characteristic of Category A infectious substances?

A key characteristic of Category A infectious substances is that they can cause serious health impacts in healthy individuals. This classification is crucial as it relates to substances known to pose a significant risk to public health under transportation conditions. Category A substances include pathogens like certain viruses and bacteria that can lead to severe disease or death in individuals who may be otherwise healthy.

Understanding this classification helps in implementing appropriate safety measures and packaging requirements to prevent exposure during transportation. The specific focus on healthy individuals underscores the potential for widespread health implications and the need for stringent handling protocols. This awareness is vital for all stakeholders, including transporters and healthcare professionals, in mitigating risks associated with these dangerous goods.

Other characteristics, like long incubation periods or limited effects only to laboratory workers, do not fully encapsulate the public health risks posed by Category A substances. Additionally, stating they are easily contained overlooks the serious implications and careful handling needed to manage such hazardous materials.